Home / 10,904.78-14,943.74-9,855.02

Finding the Fourth Proportional to 10,904.78, 14,943.74 and 9,855.02

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Solution

The fourth proportional to 10,904.78, 14,943.74 and 9,855.02 is: 13,505.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,904.78 : 14,943.74 = 9,855.02 : x
  2. Step 2: Convert to fraction form
    10,904.78/14,943.74 = 9,855.02/x
  3. Step 3: Cross multiply
    10,904.78x = 14,943.74 × 9,855.02
  4. Step 4: Simplify right side
    10,904.78x = 147,270,856.57
  5. Step 5: Solve for x
    x = 147,270,856.57/10,904.78
  6. Step 6: Final answer
    x = 13,505.17

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.